diff --git a/briar-gtk/briar_gtk/actions/window.py b/briar-gtk/briar_gtk/actions/window.py
index 7751e605ca84c6978ce35753a50472f828d169b4..d759f44ca3589b12be21ce3842bccf1f0927080f 100644
--- a/briar-gtk/briar_gtk/actions/window.py
+++ b/briar-gtk/briar_gtk/actions/window.py
@@ -36,7 +36,8 @@ class WindowActions(Actions):
         )
 
     def _setup_delete_contact_action(self):
-        self._setup_action("delete-contact", None, self._delete_contact)
+        self._setup_action("delete-contact-dialog", None,
+                           self._delete_contact_dialog)
 
     def _setup_open_about_page_action(self):
         self._setup_action("open-about-dialog", None, self._open_about_page)
@@ -57,8 +58,8 @@ class WindowActions(Actions):
             self.widget.current_container.show_sidebar()
 
     # pylint: disable=unused-argument
-    def _delete_contact(self, action, parameter):
-        self.widget.current_container.delete_contact()
+    def _delete_contact_dialog(self, action, parameter):
+        self.widget.current_container.open_delete_contact_dialog()
 
     # pylint: disable=unused-argument
     def _open_about_page(self, action, parameter):
diff --git a/briar-gtk/briar_gtk/containers/main_window.py b/briar-gtk/briar_gtk/containers/main_window.py
index 3e7c316da4f51f63e79896e3c41e477ffd922da0..ee24790ae347d76756f539bd04b084e3b548cf02 100644
--- a/briar-gtk/briar_gtk/containers/main_window.py
+++ b/briar-gtk/briar_gtk/containers/main_window.py
@@ -5,7 +5,8 @@
 # Initial version based on GNOME Fractal
 # https://gitlab.gnome.org/GNOME/fractal/-/tags/4.2.2
 
-from gi.repository import GLib
+from gettext import gettext as _
+from gi.repository import GLib, Gtk
 
 from briar_wrapper.models.contacts import Contacts
 
@@ -88,13 +89,31 @@ class MainWindowContainer(Container):
         self.contact_name_label.set_text("")
         self._current_contact_id = 0
 
-    def delete_contact(self):
+    def open_delete_contact_dialog(self):
         if self._current_contact_id == 0:
             raise Exception("Can't delete contact with ID 0")
 
-        Contacts(APP().api).delete(self._current_contact_id)
-        self._refresh_contacts()
-        self.show_sidebar()
+        confirmation_dialog = Gtk.MessageDialog(
+            transient_for=APP().window,
+            flags=Gtk.DialogFlags.MODAL,
+            message_type=Gtk.MessageType.WARNING,
+            buttons=Gtk.ButtonsType.OK_CANCEL,
+            text=_("Confirm Contact Deletion"),
+        )
+        confirmation_dialog.format_secondary_text(
+            _("Are you sure that you want to remove this contact and "
+            "all messages exchanged with this contact?")
+        )
+
+        confirmation_dialog.connect("response", self._delete_contact)
+        confirmation_dialog.show_all()
+
+    def _delete_contact(self, widget, response_id):
+        if response_id == Gtk.ResponseType.OK:
+            Contacts(APP().api).delete(self._current_contact_id)
+            self._refresh_contacts()
+            self.show_sidebar()
+        widget.destroy()
 
     def _prepare_chat_view(self, contact_name):
         if self._no_chat_opened():
diff --git a/briar-gtk/data/ui/chat_menu.ui b/briar-gtk/data/ui/chat_menu.ui
index 619ecbcd4b6813111cc83cf99178f8c642729c83..1f4be7a4bd20b4b819103f8e12cf2c48b3359a7d 100644
--- a/briar-gtk/data/ui/chat_menu.ui
+++ b/briar-gtk/data/ui/chat_menu.ui
@@ -26,7 +26,7 @@
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="receives_default">False</property>
-            <property name="action_name">win.delete-contact</property>
+            <property name="action_name">win.delete-contact-dialog</property>
             <property name="text" translatable="yes">Delete contact</property>
           </object>
           <packing>
diff --git a/briar-gtk/po/ar.po b/briar-gtk/po/ar.po
index 3fb8ce273a32e6d22c2d066adfe1b2bdd105e399..0181ef8abb7d6557395f08d5358522f739fba482 100644
--- a/briar-gtk/po/ar.po
+++ b/briar-gtk/po/ar.po
@@ -92,7 +92,7 @@ msgid "Next"
 msgstr "التالي"
 
 msgid "Delete contact"
-msgstr ""
+msgstr "حذف جهة الإتصال"
 
 msgid "Password"
 msgstr "كلمة السّر"
@@ -152,6 +152,12 @@ msgstr ""
 msgid "Myself"
 msgstr ""
 
+msgid "Confirm Contact Deletion"
+msgstr "تأكيد حذف جهة الإتصال"
+
+msgid "Are you sure that you want to remove this contact and all messages exchanged with this contact?"
+msgstr "هل أنت متأكد/ة من أنك تريد حذف جهة الإتصال هذه وكل الرسائل المتبادلة بينكما؟"
+
 msgid "Please enter a password"
 msgstr ""
 
diff --git a/briar-gtk/po/briar-gtk.pot b/briar-gtk/po/briar-gtk.pot
index 38b008ad94730ec3ec3ee83efc6a30038aa9f889..3242ea495a20eef43c3c5760ceb51bc48c34592b 100644
--- a/briar-gtk/po/briar-gtk.pot
+++ b/briar-gtk/po/briar-gtk.pot
@@ -162,6 +162,12 @@ msgstr ""
 msgid "Myself"
 msgstr ""
 
+msgid "Confirm Contact Deletion"
+msgstr ""
+
+msgid "Are you sure that you want to remove this contact and all messages exchanged with this contact?"
+msgstr ""
+
 msgid "Please enter a password"
 msgstr ""
 
diff --git a/briar-gtk/po/de.po b/briar-gtk/po/de.po
index 69ae0417522fab5d028571f0d6e059499e4f08ff..e33a58773ba9813020020261853bd5e1ac3535b3 100644
--- a/briar-gtk/po/de.po
+++ b/briar-gtk/po/de.po
@@ -92,7 +92,7 @@ msgid "Next"
 msgstr "Weiter"
 
 msgid "Delete contact"
-msgstr "Kontakt entfernen"
+msgstr "Kontakt löschen"
 
 msgid "Password"
 msgstr "Passwort"
@@ -152,6 +152,12 @@ msgstr "Briar-Funktionalität von"
 msgid "Myself"
 msgstr "Ich"
 
+msgid "Confirm Contact Deletion"
+msgstr "Löschen des Kontakts bestätigen"
+
+msgid "Are you sure that you want to remove this contact and all messages exchanged with this contact?"
+msgstr "Bist du sicher, dass du diesen Kontakt und alle dazugehörigen Nachrichten löschen möchtest?"
+
 msgid "Please enter a password"
 msgstr "Bitte gib ein Passwort ein"
 
diff --git a/briar-gtk/po/es.po b/briar-gtk/po/es.po
index 1c9cfd18a1c9c5dacdfe130e8ebcb1bdced441f1..cef368ad00da4275d709d36a244520fbe8227169 100644
--- a/briar-gtk/po/es.po
+++ b/briar-gtk/po/es.po
@@ -152,6 +152,12 @@ msgstr "Funcionalidad de Briar de"
 msgid "Myself"
 msgstr "Yo"
 
+msgid "Confirm Contact Deletion"
+msgstr "Confirmar eliminación de contacto"
+
+msgid "Are you sure that you want to remove this contact and all messages exchanged with this contact?"
+msgstr "¿Seguro que quieres eliminar este contacto y todos los mensajes intercambiados entre vosotros?"
+
 msgid "Please enter a password"
 msgstr "Por favor, introduce una contraseña"